[1] It contains is a type of clay known as montmorillonite, making it a poor foundation material due to the fact that moisture causes extreme changes in volume.

Sand, pyrite, and marl have all been noted in the formation.

It preserves fossils from the Eocene, including the prehistoric cetaceans Basilosaurus and Zygorhiza, and the marine snake Pterosphenus.

[1][2] Sharks, rays, eels, and fish have also been found from the formation.

[3] This article about a specific stratigraphic formation in Alabama is a stub.